Who Would Win?

Piotr Nikolaievitch Rasputin

X-Men member, artist

Super Strength, Agility, Stamina, Invulnerability, Shape Shifter, Unarmed Combat, Power Item, Berserker Strength

X-Men uniform — relies on organic steel transformation

Acolytes, Avengers Unity Squad, Clan Akkaba, Cosmic Champions, Defenders, Directorate X, Excalibur, Exemplars, Horsemen of Apocalypse, Maker's Council, Phoenix Five, The Initiative, The Quiet Council of Krakoa, Ultimate Federalist Freedom Fighters, Utopia's Security Recon, Weapon X, X-Force, X-Gene Mutant, X-Men, X-Tracts

Mar-Vell

Air Force pilot, Avenger, cosmic protector

Energy Absorption, Photon Blasts, Flight, Superhuman Strength, Superhuman Durability, Binary Form, Cosmic Awareness

Kree-enhanced suit — relies on cosmic energy absorption powers

currently Avengers, former companion to the X-Men (as Carol Danvers), former member of the Starjammers (as Binary), Former Avenger (as Ms. Marvel)